A highly integrated stand-alone system has been developed that processes the raw electrical output from an electric violin and produces an output signal which, when fed to an amplifier and loudspeaker, approximates closely the timbre of an acoustic instrument. The system comprises a very high-impedance preamplifier, a 24-bit sigma delta codec and a digital signal processor (DSP) operating at 590 million multiplications-accumulations per second (MMACs). The device holds in its memory up to fifty far-field impulse responses of wooden instruments, any one of which may be convolved in real-time with the input signal to synthesize the modified output signal. In addition, the device incorporates a suite of other functions to enhance the tonal quality of the final output. The user interface includes a set of navigator-style buttons and a simple display screen. Preliminary trials with a professional violinist have confirmed that the system improves significantly the tonal quality of the raw string force signal.